joe biden. run being mates with but a single goal. to paint the other one as unreliable. >> they got caught with their hands in the cookie jar. turning medicare into a piggy bank for obamacare. what we are witnessing as we turn on our television screens these days is the absolute unraveling of the obama foreign policy. >> with all due respect, that's at that bunch of malarkey. folks, use your common sense. who do you trust on this? gwen: a lively debate for both sides. >> not mathematically possible. >> it is mathematically possible. it's been done before. it's what we're proposing. >> it has never been done before. >> it's been done a couple of times actually. jack condition did i lowered tax asks increased growth. >> now you're jack kennedy. >> ronald reagan -- gwen: what won? style or sush stance. breaking it down for us tonight. doyle mcmanus of the "los angeles times." alexis simendinger of real clear politics. karen tumulty of "the washington post." and jeff zeleny of "the new york times." >> award winning reporting and analysis